MAINTENANCE
WARNING:
When servicing, use only identical WEN replacement parts. Use of other parts may be
hazardous or induce product failure.
WARNING:
To avoid accidents, turn OFF the lathe before cleaning, adjusting, or performing any
maintenance or lubrication work.
CLEANING & LUBRICATION
The more care you give your chuck, the longer service life it will give you. For more information on lathe
maintenance visit
wenproducts.com
and search model number LA4275 - you will find links to helpful main-
tenance guides on the product page.
1. Your chuck will get dirty as it collects chips, dust and other debris from your turning projects. Wipe your
chuck down after each use with a soft cloth.
2. If you choose to use compressed air to spray away debris, direct the air outwards, spraying from the
center. Limit air pressure to 25 PSI or lower.
3. Apply a dry lubricant (PTFE works well) to the moving parts of the chuck to ensure smooth movement.
NOTE:
Use only dry lubricants - a wet lubricant or grease will cause dust and chips to stick, possibly
getting into the interior of the chuck and lead to decreased performance or damage.
4. Occasionally use a small brush, such as a toothbrush, to get hard-to-reach chips off the jaws, jaw
carriages, body, etc.
5. Occasionally, open up the jaws and use a wire bottle brush to clean the scroll screw. Run the brush along
the screw while turning the chuck key in the keyhole.
6. If desired, you may decide to occasionally tear down your chuck and give it a thorough cleaning. The
frequency of this maintenance depends on how often you use the chuck, the species of wood being
turned, the size of chips, etc. Visit
wenproducts.com
and search model number LA4275 - you will find a
link with a helpful deep cleaning guide on the product page.
DISPOSAL
When the product reaches the end of its lifetime, please do not dispose of parts with your household waste.
This product contains components that should be recycled. Please take this product to your local recycling
facility for responsible disposal to minimize its environmental impact.
Please recycle the packaging and components where facilities exist.
INSTRUCTION MANUAL
INSTRUCTION MANUAL
2
3
1. Turn OFF and unplug your lathe.
2. Mount the screw chuck in your chuck with an internal grip. The bottom lip of the screw chuck should be
under the jaws to help hold it in place. See Fig. 4.
3. The base of the workpiece should be flat and square to its sides. Using a 3/8" drill bit, drill a pilot hole
straight down into the center of the workpiece, approximately 31mm (1-7/32") deep.
4. Screw the workpiece onto the screw chuck. The base of the workpiece should be flush against the top of
the jaws. See Fig. 5.
Chuck
Body
Jaw
Face
Screw
Chuck
Chuck
Key
Lip
Fig. 4
Flush
REMOVING THE GREASE
Your chuck comes with a protective layer of grease coating its
surfaces. Before you use the chuck, use a dry cloth to remove
the protective layer of grease.
USING A LIVE CENTER
If turning long workpieces, use a live center in your tailstock to
support the workpiece. Refer to your lathe's manual.
MOUNTING THE CHUCK ON YOUR LATHE
This chuck is compatible with the entire line of WEN wood
lathes along with any other wood lathe that has a headstock
spindle of 1 inch diameter and 8 threads per inch (1"-8).
1. Thread the chuck onto the headstock spindle by turning the
chuck clockwise. Hold the headstock handwheel to keep the
spindle stationary.
NOTE:
Depending on your lathe, there may
be a different method for keeping the spindle stationary, such
as a spindle key or another tool.
2. While holding the spindle stationary, insert the chuck key
and use it as a handle to turn the chuck clockwise on the
spindle until the chuck is fully secured.
OPENING/CLOSING THE JAWS
1. With the chuck mounted on the lathe, you can open or close
the chuck jaws to secure your workpiece. Insert the chuck key
into the key hole on the chuck body. See Fig 4.
2.
To open the jaws:
Turn the chuck key counter clockwise.
3.
To close the jaws:
Turn the chuck key clockwise.
4. Place your workpiece flush against the jaw face.
5. Open or close the jaws to internally or externally grip your
workpiece (Fig. 1 & 2). The jaws should be fully tightened on
your workpiece.
6. To remove the workpiece from the chuck, open or close the
jaws to release the grip. Hold your workpiece as you release
the grip so it does not fall.
MOUNTING THE SCREW CHUCK
Your LA4275 chuck comes with an M8-3.0x20 screw chuck.
The screw chuck is helpful when turning larger workpieces.
OPERATION
Fig. 5
16
4.50
12
5°
5°
5
17.05
19.45
Jaw Carriage
NOTE:
All measurements are in mm.
Fig. 3
